Pneumatic tire

US11541696B2 · kind B2 · utility

Assignee

• COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN · FR

Inventors

• Bradford M. Hicks · Greer, US
• Paul Winston · Greenville, US
• Mary Dungan Thomas · Fountain Inn, US
• Donald Earl Leonard · Simpsonville, US
• Vittoria Madonna Blasucci · Greenville, US

Key dates

• Filing date: Nov 30, 2017
• Grant date: Jan 3, 2023
• Expiry date: Mar 1, 2038

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B60C2015/065
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

A pneumatic tire having a pair of annular bead areas (12), a pair of sidewalls, and a crown portion wherein a carcass ply (22) wraps around a radial inner side (RSj,2o) of each bead ring (20), for each bead area (12) a first layer of rubber material (30) is arranged radially inward from both the bead ring radial inner side (RSi,2o) and the carcass ply (22) and a second layer of rubber material (40) is arranged radially inward from the first layer of rubber material (30), each of the first layer of rubber material (30) and the second layer of rubber material (40) extending substantially across a full width (W20) of the corresponding bead ring (20), each of the first and second layer of rubber material (30, 40) having a modulus of elongation, where the modulus of elongation of the second layer of rubber material (40) is equal to or greater than substantially 125% of the modulus of elongation of the first layer of rubber material (30).